Other and unspecified effects of external causes
ICD-10 Codes (0)
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Updates & Changes
FY 2026 Updates
New Codes (2)
Revised Codes (1)
Deleted Codes
No codes deleted in this range for FY 2026
Historical Changes
- •FY 2025: Routine maintenance updates with minor terminology clarifications
- •FY 2024: Enhanced specificity requirements for certain code ranges
- •FY 2023: Updated documentation guidelines for improved clarity
Upcoming Changes
- •Proposed updates pending review by Coordination and Maintenance Committee
- •Under consideration: Enhanced digital health integration codes
Implementation Guidance
- •Review all FY 2026 updates for T90-T98 codes before implementation
- •Always verify the most current codes in the ICD-10-CM manual
- •Ensure clinical documentation supports the selected diagnosis codes
- +3 more guidance items...
Range Overview
The ICD-10 category T90-T98, 'Other and unspecified effects of external causes,' encompasses codes that document the late effects of injuries, poisonings, and other consequences of external causes. These codes are used when the acute phase of an injury or poisoning has resolved but residual effects remain. It is important to note that these codes are not used for the initial injury or poisoning event, but for subsequent medical encounters when the patient is receiving care for the long-term effects.
Key Usage Points:
- •These codes are used for follow-up visits after the acute phase of an injury or poisoning.
- •The codes are not used for the initial injury or poisoning event.
- •The codes can be used for any residual effects, regardless of the time elapsed since the initial event.
- •The codes should be sequenced following the underlying condition code.
- •The codes can be used in conjunction with other codes to provide a more detailed picture of the patient's condition.
Coding Guidelines
When to Use:
- ✓When a patient is being treated for the late effects of a burn.
- ✓When a patient is receiving care for the residual effects of a poisoning incident.
- ✓When a patient is being treated for complications from a previous injury.
- ✓When a patient is receiving care for the long-term effects of an external cause.
When NOT to Use:
- ✗When the patient is being treated for the initial injury or poisoning event.
- ✗When the patient has fully recovered from the injury or poisoning with no residual effects.
- ✗When the patient's condition is not due to an external cause.
- ✗When the patient's condition is due to an internal cause.
Code Exclusions
Always verify exclusions with the patient's medical record and the official ICD-10 coding guidelines.
Documentation Requirements
Documentation for these codes should include a detailed description of the patient's condition, the residual effects of the injury or poisoning, and the treatment provided. The documentation should also clearly indicate that the condition is a late effect of an external cause.
Clinical Information:
- •Detailed description of the patient's condition
- •Description of the residual effects of the injury or poisoning
- •Treatment provided
- •Indication that the condition is a late effect of an external cause
Supporting Evidence:
- •Medical history
- •Physical examination findings
- •Laboratory and diagnostic test results
- •Progress notes
Good Documentation Example:
Patient is being treated for residual effects of a burn sustained 2 years ago. The burn has healed, but the patient has ongoing pain and limited mobility in the affected area.
Poor Documentation Example:
Patient is being treated for burn.
Common Documentation Errors:
- ⚠Not documenting that the condition is a late effect of an external cause
- ⚠Not providing a detailed description of the patient's condition
- ⚠Not documenting the treatment provided
- ⚠Not including supporting evidence
Range Statistics
Coding Complexity
Coding for these conditions can be complex due to the need to determine whether the condition is a late effect of an external cause, identify the residual effects of the injury or poisoning, sequence the codes correctly, navigate the exclusions, and document the condition and treatment accurately.
Key Factors:
- ▸Determining whether the condition is a late effect of an external cause
- ▸Identifying the residual effects of the injury or poisoning
- ▸Sequencing the codes correctly
- ▸Navigating the exclusions
- ▸Documenting the condition and treatment accurately
Specialty Focus
These codes are commonly used in specialties that treat patients with long-term effects of injuries or poisonings, such as physical medicine and rehabilitation, pain management, and neurology.
Primary Specialties:
Clinical Scenarios:
- • Patient with chronic pain due to a previous burn injury
- • Patient with neurological complications from a previous traumatic brain injury
- • Patient with mobility issues due to a previous fracture
- • Patient with respiratory issues due to a previous inhalation injury
- • Patient with psychological issues due to a previous poisoning incident
Resources & References
There are many resources available to help with coding these conditions, including the official ICD-10 coding guidelines, clinical reference books, and educational materials.
Official Guidelines:
- Official ICD-10 coding guidelines
- ICD-10-CM Official Guidelines for Coding and Reporting
- ICD-10-CM Expert for Hospitals
Clinical References:
- Clinical reference books
- Medical journals
- Online medical databases
Educational Materials:
- Coding webinars
- Coding workshops
- Online coding courses
Frequently Asked Questions
Can these codes be used for the initial injury or poisoning event?
No, these codes are used for subsequent medical encounters when the patient is receiving care for the long-term effects of an injury or poisoning.